Just wondering if anyone had any new ideas for a punch style drink for about 20 people. this is for Halloween but doesn't have to be theme oriented.
Oh and easy to make yes but doesn't have to be a cheap drink.

I'm tossing in a suggestion based on some testing done last night at my home bar with a friend. He is also looking for something inexpensive and tasty to serve for a large group coming to his home in the next few weeks.

The "Fink Bomb" from Frankie's Tiki Room is relatively simple and flavorful. It is made with pineapple juice, Midori melon liqueur, coconut rum, and a gold rum float over ice. We took a road trip and found three versions of melon liqueur at Total Wine -- Midori $20, DeKuyper $12, and another low-end brand for $7. We decided to test with my Midori and also bought a bottle of the $7 liqueur. We made two cocktails and for both we used Cruzan coconut rum (very reasonable at around $13/bottle) along with Diplomatico gold rum for the float and swapped out only the melon liqueur.

Our conclusions were:
1) The low-end melon rum was sweeter and not as rich and thick as Midori, but we thought it would work well for non-experienced drinkers. The Cruzan coconut offered a good combination of flavor and low price and worked very well. The Diplomatico could be replaced by another less-expensive gold rum, but we didn't have the guts to go too cheap all the way around. The pineapple juice came from a Dole can and held up well.
2) There is NO SHAKING and NO GARNISH involved in making the drink. Add ice, then all the liquid ingredients. It tends to "layer" and looks attractive on its own. So this was very low-effort cocktail with a pleasant pineapple/coconut/melon blend.

Better ingredients yield better taste and texture, but this is definitely EASY. And it's relatively INEXPENSIVE if you buy lower-end melon liqueur and low-end gold rum.

Tiare at A Mountain of Crushed Ice just posted a Wray and Nephew rum pumch from the recent UK Rum Festival (see link) that looks worthwhile. I'm going to spin this up over the weekend for sure, though I will be doubling the amount of rum. It's similar to a homespun Jamaican House Party Punch I am very fond of.

Tried the J Wray Reggae Punch tonight made to recipe specs and it was good but needs to be tweaked cor balance. Used up all my Wray a d Nephew but when I get some more I will try this one again with 1.5x the rum and 0.75x the Jamaican strawberry syrup.

When I have a decent sized group, I mix a big batch of Rum Barrels. I use Myers's instead of Demerara. Everyone likes it, it is not hard to measure. It is a big drink that you can serve in smaller glasses full of ice and make it last longer. It improves with better ingredients, but it perfectly good off the shelf. Do get decent lime juice like the not from concentrate organic bottled if you don't want to fresh squeeze.

It's a 9 oz. drink, which is pretty huge compared to most. It is basically double a normal recipe and is less than 50% booze, which again, isn't too bad for a Tiki drink. Ice cubes can help it to melt and dilute a bit faster to help that as well.
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